A novel Ehrlichia strain (Rickettsiales: Anaplasmataceae) detected in Amblyomma triste (Acari: Ixodidae), a tick species of public health importance in the Southern Cone of America

被引：15

作者：

Cicuttin, Gabriel L. ^{[1
]}

De Salvo, Maria N. ^{[1
]}

Perez, Paula Diaz ^{[1
]}

Silva, Dario ^{[1
]}

Felix, Maria L. ^{[2
]}

Venzal, Jose M. ^{[2
]}

Nava, Santiago ^{[3
,4
]}

机构：

[1] Inst Zoonosis Luis Pasteur, Buenos Aires, DF, Argentina

[2] Univ Republ, CENUR Litoral Norte, Fac Vet, Lab Vectores & Enfermedades Transmitidas, Salto, Uruguay

[3] Inst Nacl Tecnol Agr, Estn Expt Agr Rafaela, Santa Fe, Argentina

[4] Inst Nacl Tecnol Agr, Consejo Nacl Invest Cient & Tecn, Santa Fe, Argentina

来源：

PATHOGENS AND GLOBAL HEALTH | 2020年 / 114卷 / 06期

关键词：

Ehrlichia; ticks; Amblyomma; South America; SMALL MAMMALS; CANIS RICKETTSIALES; MOLECULAR-DETECTION; CHAFFEENSIS; INFECTION; DOGS; ARGENTINA; PROVINCE; AGENT; AREAS;

D O I：

10.1080/20477724.2020.1795579

中图分类号：

R1 [预防医学、卫生学];

学科分类号：

1004 ; 120402 ;

摘要：

The aim of this work was to report the detection of a putative novelEhrlichiastrain associated with the tickAmblyomma triste. Free-living adult ticks determined asA. tristewere collected by drag-sampling in Argentina and Uruguay. Molecular detection ofEhrlichiaagents was performed targeting three different loci: 16S rRNA gene,dsbgene and a fragment ofgroESLheat shock operon. In total, 164 adults ofA. triste(38 from INTA E.E.A Delta del Parana in Argentina and 126 from Toledo Chico in Uruguay) were analyzed. One tick (0.6%) collected in INTA E.E.A. Delta del Parana (Argentina) was positive. The phylogenetic analyses show that theEhrlichiastrain found in this study (namedEhrlichiasp. strain Delta) represents an independent lineage within the genusEhrlichia, close toE. chaffeensisandE. muris. This is also the first report of anEhrlichiaagent infecting the tickA. triste. The medical and veterinary significance ofEhrlichiasp. strain Delta remains to be demonstrated. However, it is important to mention that adults ofA. tristeare aggressive to humans and domestic mammals. Therefore, the potential role ofA. tristein the transmission ofEhrlichiaagents to humans or domestic animals across its distributional range should be highlighted, even more considering thatEhrlichiasp. strain Delta is phylogenetically related to the zoonoticE. chaffeensis, which is recognized as pathogenic to both humans and animals.

引用

页码：318 / 322

页数：5